Oil-well pump



AW. H7, w23.

A. A. OLSEN OIL WELL PUMP- Filed Deo. 6 1921 M44 ,fa/'MEMS'.

Application met! heecmher t, leal.

pump oil containing sandy or gritty material and which may he operated intermittently in pumping oil containing said material without danger oil the pump being clogged up'by the sand, shale or other material settling out of the oil so pumped. ln the ordinary production of oil, it is quite common to lind associated with the oil large quantities of tine sand or silt, and it is a particular object of my invention to provide a pump which will operate satisfactorily under such conditions. f'

Such materials, also have a highly abrasive action and tend to rapidly cut out the working surfaces of the pump. lt is a further object of my invention to provide a pump in which these gritty or abrasive niaterials are almost wholly excluded from the workin surfaces.

A stil further object of my invention is to provide a pump which will be double acting so that a portion ot the work is done on the downstroke, thereby equalizin the pull on the sucker rods and reducing t e strains thereon.

Further objects and advantages will be made evident hereinafter.

v Referring to the drawing which is tor illustrative'purposes only, v

Fig. 1 is a vertical cross section through the upper portion of a pump equipped with m invention.

lig. 2 is a section on a plane represented by the line 2--2 of Fig. 1. I

lig. 3 is a section on a plane represented by the line 3-3 of Fig. 1.

Fig. d is a vertical cross section of the lower part of the pump shown in Fig. 1.

lin the form or the invention shown,vl rovide a collar 11 which is threaded at 12 tor attac'ent to the tubing of the well, not shown, upon which the collar l2 is rincipal o ject of the invention is `to provide a pump whichwill beV adapted to screwed and upon which the stationary portion of the pump is suspended. hastened in the lower end of the collar 12 is a nipple 13 which carries a second collar 1t at its lower end. hastened in the collar 1d is a shell 15 carrying liners 16, the shell 15 and the liners 16 forming a working barrel in which a plunger 20 is reciprocated. rlhe plunger 20 is ground to an accurate t in the liners 16 and is secured to a member 21 having an opening 22 therethrough, the member 2l havin a seat 23 upon which a valve 24 seats. he upper portion of the member 21 is secured in a member 25 having a central opening 26 therein, this opening 26 forming a cage in which the ballv 24 is free to rise and fall. rlhreadedin uid-tight relationship in the top of the member is an eduction pipe 30 which extends up and is secured in a member 31. having an opening 32 therethrough. A seat 33 is secured in the top of the opening 32 and a valve 3d is free to seat thereon, this valve being carried in a cage 35 which is open at either side so that the central cavity 36 in which the ball 3d moves is in open communication with the space inside the tubing, not shown.

Seated in a conical seat t0 in the collar 11 is a plug d1 which carries packing ft2 making a fluid-tight joint around the pipe 30. This packing d2 may be compressed by means of a nut d3. Secured on the bottom of the shell 15 is a collar 50 to which a nipple 51 is secured, this nipple carrying a collar 52. Seatedon a tapered seat 53 in the collar 52 is a standing valve seat 5dy having an opening'55 therethrough, this opening having a seat 56 and a standing valve ball 57. The ball 57de carried in a cage 58 which is secured to a hollow garbutt rod 59. The garbutt rod 59 extends u inside the plunger 20 and is provided wit a head 60 which engages a shoe 61 threaded in the bottom of the plunger in the event that the plunger is withdrawn from the liners 16.

rlihe method of operation of the invention is as follows:

A line of sucker rods, not shown, extending downwardly through the tubing, not shown, is connected to the threaded end oi the member 33 and is used to litt the plunger 20 through the pipe 30 and its connected parts. @n the up stroke of the plunger, the oil lifts the ball 57 and passes upwardly through the hollow rbutt rod 59 into the interior oi the plunger 20. At the same mit lll@

time, the balls 24 and 34 remain seated.` As soon as the plunger reaches its upper osition and starts downwardly, the bal 57 seats andthe balls 24 and 34 are raised, oilbeing forced upwardly through the pipe 30 into the space inside the tubing around the f 'ing comprising a casing, a pump barrel, a

member 33.` During this up and down motion,`the hollow garbutt rod 59 remains in the position shown "and is not disturbed except when it is desired to remove the working parts from the w'ell.t Due to the packing 42, oil is excluded yfrom the space around the pipe 30 inside the liner 16. Anyoil which is initially in this space on the first upward stroke of the plunger is forced out due to the fact that the plug 41 will be raised from its seat and the oil expelled. As soon as the plunger starts on its downward motion, the yplu vacuum is forme in the space around the ipe 30 inside the liner 16 andthe nipple 13.

hile there may be some sand or silt in the oil in this space, this sand or silt is a relativel small amount and will notrserve to clog t e pump or to greatly retard its action. This is due to the fact that the amount of oil is small and this small amount of oil which remains in this space is not changed on successive strokes of the pump. The main `flow of the oil is upwardly through eduction pipe 30 and while this oil may carry large quantities of sand and this sand may settle in the lower portion of the tubing whenthe pump is shut down, .the method of construction is such that this sediment has very little tendency to retard the operation of the pump. f l r In the ordinary orni'of pump in which the sucker rods are connected directly to the member 25 and in which the oil is forcedl from the opening 26 directly into the space inside the liner 16, it is evident that there is a eat likelihood of a settlement of sand or si t on top of the member 25 and directly against the wearing surfaces ofthe liner 16, especially when the pump is shut down. It is also evident with the sand or silt collected in this particularv location that the first upward movement of the pump tends to force this sand or silt down into the working surfaces between the plunger 20 and the liner 16 and that a rapid deterioration of these surfaces is to be expected.

In the event that it is desired to pull the working portion of the pum from the well, the plug 41 will be lifted om its seat by the member 25- and the standing valve seat 54 and its connected parts will also be raised b means of the hollow y 59 so t at the plug 41, the pipe 30, the plunger 20, the hollow garbutt rod 59 and the standing valve seat 54 are all taken out of the well together.

It is also evident that at the same time the balls 34, 24 and 57 with their Seats are 41 seats and a partialv rbutt rod` Maigret also raised. In the practical working or" my invention, prefer to use both the ball 34 and the ball 24, but either of these balls may be dispensedwith under certain conditions.

I claim as my invention: 1. A fluid pump for use with a well cas plunger operating in the pump barrel, valve mechanism permitting the flow of the fluid in one direction, and means cooperating with the plunger to positively prevent contact of abrasive in the fluid pumped with any points of frictional engagement of the plunger andv barrel. A

y2. A fiuid pump for use with a well casing comprising a casing, a' pump barrel, a plunger operating in the pump barrel, valve mechanism permitting the iiow of the fluid in one direction, and means cooperating with the plunger to positively prevent contact of the fluid pumped with the barrel.

3. A fluid pump for use with a well cas'- ing comprising a casing, a pump barrel, a plunger within the barrel, a stationary tube within the plunger through which the fluid passes, valve mechanism permitting the flow of the fluid in one direction, and means on the plunger to prevent contact of the fluid pumped with the exterior of the plunger.

4. A fluid. pump for use with a Well casing comprising a casing, a pump barrel, a

plunger within the barrel, a garbut-rod within the plunger through which the fluid passes, valve mechanism permitting the flow of fluid in one direction,- and a shoe on the plunger to prevent contact of the Huid v pumped with the exterior of the plunger.

5. A fiuid pump for use with a well casing comprising a casing, a pump barrel, a plun er within the barrel, a stationary tube within the plunger through which the fluid passes, valve mechanism permitting the flow of the fluid in one direction, means on the plunger for preventing contact of the fluid pumped with the exterior of the plunger, a plug in the casing unseated with upward pressure, and means for operating the plunger reciprocating in the plug.

6. A fluid pump for use with a well casing comprising -a casing, a pump barrel, a plunger within the barrel, a hollow garbutrod within the plunger through which the fluid passes, valve mechanism 'permitting the flow of fluid in one direction, a plug in the casing unseated with upward pressure, means for operating the plunger reciprocating in the plug, and a shoe on the plunger to prevent contact of the fluid pumped'with the exterior of the plunger.

7. A fiuid pump for use with a well cas` ing comprising a casing, a pump barrel, a plun er within the barrel, a stationary tube within the plunger through which the fluid passes, a one-way valve in the stationaryr tube, valve mechanism preventing downward ilow of liquid in the plunger, and means on the plunger to revent contact of the fluid pumped 'with t e exterior of the plunger.

8. A iluid'pump for use with a well casing comprising a casing, a pump barrel, a plunger within the barrel, :n.liollow garhutrod within the plunger through which. the fluid passes, a, one-wayvalve in, the garhutrod, e one-way valve 1n the lunger located above and relatively near to t e upper end of the urbut-rod, another one-way valve locatehefore the last mentioned valve, a head for the garhut-rod, and a. uhu@ ou the plunger to prevent contact of the duid pumped with the exterior of 'the plunger and to cooperate with said head 1n removing the device from e well.

9. A huid pump for use with a well casing comprising a casin e pump barrel, e plunger operating in t e" pump barrel, u plug in the casin uuseating with u ward pressure, means or operating the p unger reciprocating in the p u valve mechanism permitting the ilow of t e Huid in one direction, and means cooperating with the plungerlto `positively prevent contact of abrasive in the duid pumped with any points of frictionul engagement of the barrel vand plunger.

10. A Huid pump `for use with e well cusing comprising a casing, a pum barrel, u plunger within the barrel, u stationary tube within the plunger through Whichthe lluid passes, n plug in the casing unseatable with epcessive upward pressure, means for operating the plunger. reciprocating in the plug, a one-'way valve in the plunger.

.11. A fluid pump for use with e well casing comprising a casing, a. pump barrel, a plunger within the barrel, a plug in the casing unseating with upward pressure, means for operatin the plunger reciprocating in 'the plug. s. ollow garbut-rod within the plunger through which the duid passes, e one-way valve in the gerbut-rod, a one-way valve in the plunger located vabove and relatively near to the upper end of the gerhutrod, another one-way yvulve located above the lest mentioned valve, a head for the garbut-rod, and e, shoe on the plunger to prevent contact of the iluid pumped with the exterior of the plunger and to coo rate with sai 'head in removingv the device from e we 12. A duid pump for use with e well cesing comprising e casing, e pump barrel, e plum r Within the barrel, e. stationary tube within the plunger through which the fluid passes, a plug in the casing unseatable with excessive upward pressure, means for operating the plunger reciprocating in the plug, and means for preventing discharge of the iluid through the pump in e downward direction.

In testimony whereof l have hereunto set my hand at Ranger, Texasnthis 25th dey of November. 1921. l

ALBERT n; oLsuN. 

